EP2766135B1 - Apparatus and method for realizing a plurality of riveted connections along the surface of a workpiece - Google Patents

Description

The present invention relates to an apparatus and a method for accomplishing a plurality of rivets along the surface of a workpiece according to the preamble of claims 1 and 9, respectively.

• eine mittels Werkzeugsteuerdaten steuerbare Werkzeugeinrichtung zur Ausbildung von Bohrungen am Werkstück und zum Setzen von Nieten in den ausgebildeten Bohrungen, wobei es sich insbesondere auch um Senkkopfniete handeln kann,
• eine Steuereinrichtung bzw. einen Rechner zur Erzeugung der Werkzeugsteuerdaten für die Werkzeugeinrichtung, und
• eine optische Erfassungseinrichtung zur optischen Erfassung der Werkstückoberfläche und zur Bereitstellung von Erfassungsdaten.

Such a device and such a method are for example of the generic type DE 35 35 761 C1 known. Therein, a riveting machine with computer-aided control of riveting positions on a workpiece, in particular a large-area curved workpiece (eg "bulkhead"), is described. The known riveting machine includes:

• a tool device controllable by means of tool control data for the purpose of forming bores on the workpiece and for setting rivets in the formed bores, which may in particular also be countersunk rivets,
• a control device or a computer for generating the tool control data for the tool device, and
• an optical detection device for optically detecting the workpiece surface and providing detection data.

The tool device in this case comprises two computer-assisted movable riveting systems, namely in each case a riveting system on each side of the likewise computer-supported movable workpiece. One of the two riveting systems has a turret, on which five processing functions are realized: a) drilling and lowering, b) sealant injection, c) rivet feeding and holding back, d) Special function such. B. scanning the hole geometry with a camera, and e) observing the functions a) to d) with a video camera.

The "scanning of the bore geometry" with a camera is used in the known riveting machine to determine by the observation of the surface of a sample workpiece, the coordinates of holes of the sample workpiece and store it in a computer to these coordinates in a later implementation of the automatic Riveting on the actual, d. H. to use with rivets to be provided workpiece.

A similar riveting machine is out of the DE 198 34 702 A1 known. This known device is used to produce a barrel-shaped component, such as. B. an aircraft fuselage. Also in this riveting device, the tool device comprises coordinated cooperating riveting systems on both sides of the workpiece to be machined. The use of countersunk rivets as well as the use of an optical detection device for optical detection of the workpiece surface are not described in this publication.

In general, when setting countersunk rivets in many applications, it is of great importance that the countersinking of the previously formed countersunk bore is adapted as exactly as possible to the geometry of the countersunk rivet to be set and / or for achieving a desired position of the countersunk head of the set rivet with respect to the workpiece surface is adjusted.

If, for example, the countersinking has too small a countersunk depth, a so-called "setting head projection" of the subsequently set rivet results, ie the rivet head protrudes out of the workpiece surface to a certain extent. Conversely, if the sink depth is too large, so results in a corresponding indentation on the workpiece surface, which is also referred to as setting head shelter or "negative setting head projection".

For example, with rivets along the outer surface of a fuselage shell of an aircraft, excessive butt protuberance would significantly degrade the aerodynamic properties in the later use situation of the fuselage shell. A very small or even better than no setting head projection is in this application a very important criterion for assessing the quality of a riveted joint. The subsequent repair of too imprecisely performed riveting has so far led to considerable cost expenditure in the hull shell assembly in aircraft.

The (positive or negative) setting head projection is determined in practice, with a given shape design of the rivet head and a predetermined "reduction angle" of the reduction, significantly from the realized by means of the tool device sink depth of the counterbore. The sink depth is therefore an important process parameter in automatic riveting systems, which must be taken into account in the program-controlled generation of the tool control data.

According to an internal company development of the applicant, in a riveting device of the type mentioned in the introduction, the optical detection device (eg a camera) is used to determine those positions on the surface of the workpiece on which so-called "stitch rivets" are set. These staple rivets are used to provisionally bind or "tack" the reinforcing structures (eg stringers or ribs on the inside of a fuselage shell) to be riveted to the workpiece during the riveting process. This attachment can z. B. manually. At the end of the automatic riveting process, the positions of the stitch rivets are then determined by means of the optical detection device. These positions can be used as "reference points" for the countersunk rivets to be set automatically in the programmable control device (eg NC control unit) and used to advantage in the generation of the tool control data. In the automatic riveting process, the temporary rivets can be automatically removed and replaced with countersunk rivets (by reaming the rivet, lowering the bore, and setting the countersunk rivets).

The problem with the known riveting devices of the type described above is the achievement of a consistent and high quality of the rivets, so that subsequent repairs can be avoided.

It is therefore an object of the present invention to provide a way of improving the quality of the rivets in the automatic accomplishment of a plurality of rivets of the type mentioned.

This object is achieved according to the invention by a riveting device according to claim 1 and a riveting method according to claim 5. The dependent claims relate to advantageous developments of the invention.

In the riveting device according to the invention, the control device is designed to carry out an evaluation of the acquisition data supplied by the optical detection device in order to obtain geometry data representing at least one geometry parameter of an already formed counterbore, and a correction of the tool control data depending on the result of an evaluation of the obtained geometry data for a subsequently to be formed counterbored.

The actually formed geometry of a counterbore is, as explained above, of great importance with regard to the quality of the resulting riveting. Advantageously, a possibly anyway (for other purposes) provided optical detection device, for. As a camera, used in the invention to determine at least one geometry parameter (eg., Reduction diameter) of an already formed counterbore.

On the basis of a subsequent evaluation of the obtained geometry data z. B. can be determined in a simple manner, whether the geometry of the respective counterbore is within a predetermined and, for example, stored in the control device tolerance range or not. In this respect, a running in the control device control program z. B. provide that an already trained counterbore or reduction is further improved before the Senkkopfniet is set in the counterbore. This is quite conceivable within the scope of the invention.

However, it is essential for the invention that, depending on the result of the evaluation of the geometry data obtained, a correction of the tool control data as required for (at least) a counterbore to be formed subsequently is undertaken. The counterbore to be formed "subsequently" can be, in particular, the countersink bore to be formed "immediately following" as part of a machining of a specific workpiece. The invention thus takes into account the fact that in the achievement of a larger number of rivets along the surface of a workpiece there is a risk that a geometry parameter of the counterbore, such. B. especially the sink depth, gradually (from riveting to riveting) out of a respective predetermined tolerance range "out". With the inventively provided correction of the tool control data, this can be reliably prevented. If the evaluation z. B. shows that the value of the sink depth is relatively close to a lower limit of the associated tolerance range, it can by a corresponding "readjustment" of the tool control data advantageously an improved reduction result (in this case: with a slightly greater sink depth) for the subsequently to be formed (n) counterbore (s) can be achieved.

In one embodiment, the optical detection device is a camera for providing image data. This has z. B. the advantage that an already provided (eg., For monitoring purposes and / or for the purpose of "rivet") camera can be shared within the scope of the invention, so that there is no constructive overhead. As an alternative to a camera, it is also possible to use another optical measuring system as long as its measured data can be evaluated to obtain geometric data (eg laser field sensors, etc.). According to the invention, the geometry parameter is the countersink diameter. In the practically particularly frequent case that the counterbores are each formed with well (exactly) defined values of bore diameter and countersink angle, the determination of the countersink diameter is equivalent to determining the countersink depth of the counterbore. Each of these two geometry parameters can be calculated from the respective other geometry parameter.

In one embodiment, it is provided that the evaluation of the detection data takes place in such a way that the countersink diameter and, independently of this, the countersink depth are determined. Although known as the proposed reduction angle, these investigations are indeed redundant. Advantageously, however, this redundancy can be used to increase the measurement accuracy and / or for a plausibility check of the measurement. According to the invention, it is provided that the control device is designed to first determine a countersinking diameter of the counterbore on the basis of the detection data in order to then determine a countersinking depth of the counterbore, taking into account a countersinking angle of the counterbore.

In an embodiment, it is provided that the value of at least one actual geometry parameter is compared with the value of a corresponding predetermined desired geometry parameter for the evaluation of the geometry data, and the correction of the tool control data is performed based on a result of this comparison.

In one embodiment, a value of the actual sink depth contained in the geometry data is compared with a value of a predetermined set sink depth. Based on a determined actual value / setpoint deviation, correction data (eg characteristic of the extent of this deviation) can be generated in a program-controlled manner by the control device in order to correct or "update" tool control data stored in the control device with these correction data. ,

Although it is preferred that the correction of the tool control data is made at least for a sinking depth of the counterbore to be formed subsequently, it should by no means be excluded within the scope of the invention to alternatively or additionally use other geometry parameters of the counterbore for the correction in the manner described. In particular, alternatively or in addition to the sink depth z. B. the above-described actual value / setpoint comparison are also made for the countersink diameter.

• Ausbilden von Senkbohrungen am Werkstück und Setzen von Senkkopfnieten in den ausgebildeten Senkbohrungen, unter Verwendung einer mittels Werkzeugsteuerdaten gesteuerten Werkzeugeinrichtung,
• programmgesteuertes Erzeugen der Werkzeugsteuerdaten für die Werkzeugeinrichtung,
• optisches Erfassen der Werkstückoberfläche zur Bereitstellung von Erfassungsdaten (z. B. von einer Kamera bereitgestellte Bilddaten),
• Auswerten der Erfassungsdaten, um Geometriedaten zu gewinnen, die wenigstens einen Geometrieparameter (z. B. (wenigstens) eine Senktiefe und/oder (wenigstens) einen Senkungsdurchmesser) einer bereits ausgebildeten Senkbohrung repräsentieren,
• Auswerten der gewonnenen Geometriedaten, und
• Korrigieren der Werkzeugsteuerdaten für eine nachfolgend auszubildende Senkbohrung in Abhängigkeit vom Ergebnis der Auswertung der Geometriedaten (z. B. im Hinblick auf die Erzielung der gewünschten Senktiefe(n) bzw. den gewünschten Senkungsdurchmesser(n)).

The method according to the invention as defined in claim 5 for effecting a plurality of rivets along the surface of a workpiece, in particular the steps:

• Forming countersunk holes on the workpiece and setting countersunk rivets in the countersunk holes, using tool means controlled by tool control data,
• programmatically generating the tool control data for the tool device,
• optically detecting the workpiece surface to provide acquisition data (eg, image data provided by a camera),
• Evaluating the acquisition data to obtain geometry data representing at least one geometry parameter (eg, (at least) one sink depth and / or (at least one sink diameter) of an already formed counterbore,
• Evaluation of the obtained geometry data, and
• Correcting the tool control data for a counterbore to be subsequently formed depending on the result of the evaluation of the geometry data (eg with regard to achieving the desired countersink depth (s) or the desired countersink diameter (s)).

The correction of the tool control data is preferably provided as a closed loop. This is preferred with a (high) "control frequency", in which the result of the evaluation of the geometry data for a specific counterbore leads so quickly to the possibly required correction of the tool control data that the corrected or updated tool control data can already be taken into account in the immediately subsequent formation of the next counterbore.

Instead of a correction based solely on an evaluation of those geometry data, which were obtained for the last formed counterbore, is also considered, provided for a plurality of counterbores detection data and / or obtained evaluation results and / or generated correction data, eg. B. after a weighted averaging, to use for the correction of the tool control data.

A preferred use of a device and / or a method of the type described above is the accomplishment of a plurality of rivet connections between an areal expanded component and an attached on a flat side of the component elongated reinforcing element, in particular in the context of producing a reinforced fuselage shell of a vehicle, in particular aircraft ,

Fig. 1

eine schematische Darstellung einer automatischen Nietanlage gemäß eines Ausführungsbeispiels, mitsamt eines zu bearbeitenden Werkstückes,

Fig. 2

eine der Fig. 1 entsprechende Darstellung nach dem Ersetzen eines Heftniets durch einen Senkkopfniet,

Fig. 3

eine Darstellung zur Veranschaulichung der geometrischen Verhältnisse an einer Senkbohrung,

Fig. 4

ein mit einer Kamera der automatischen Nietanlage erfasstes Bild der Werkstückoberfläche, und

Fig. 5

ein Ablaufdiagramm des mit der Nietanlage durchgeführten Nietverfahrens.

The invention will be further described by means of embodiments with reference to the accompanying drawings. They show:

Fig. 1

a schematic representation of an automatic riveting according to an embodiment, together with a workpiece to be machined,

Fig. 2

one of the Fig. 1 corresponding representation after the replacement of a rivet by a countersunk rivet,

Fig. 3

a representation for illustrating the geometric conditions on a counterbore,

Fig. 4

a captured with a camera of the automatic riveting system image of the workpiece surface, and

Fig. 5

a flow diagram of riveting carried out with the riveting.

Fig. 1 shows an automatic riveting system 10 for effecting a plurality of rivets along the surface of a workpiece.

In the example shown, the workpiece is a fuselage shell 12 of an aircraft, with the rivets serving to fasten reinforcing profiles to the inside of the fuselage shell 12. In Fig. 1 For example, a so-called stringer 14 is shown.

The stringer 14 is in the in Fig. 1 provisionally fixed by a series of staple rivets on the fuselage shell 12. In Fig. 1 shown by way of example are two staple rivets 16 and 18 which have previously been set manually, for example.

The riveting system 10 comprises a tool device 20 which can be controlled by means of tool control data "ws" and which comprises a first tool system 20-1 and a second tool system 20-2.

The tool systems 20-1 and 20-2 are arranged on each side of the workpiece to be machined (here: fuselage shell 12 with stringer (s) 14) and can be controlled in a coordinated manner by means of the tool control data "ws" in order to accomplish the desired riveting.

Each of the tool systems 20-1 and 20-2 can be moved, for example, in at least one of the three spatial directions x, y and z by means of the tool control data "ws", whereby both rectilinear and curved travel paths are conceivable, by suitable guide means (not shown) can be realized. As an alternative or in addition to this movability of the tool systems 20-1 and 20-2, it is also possible to provide pivoting of at least one of the systems 20-1 and 20-2 by at least one angle.

Regardless, a movable and / or pivotable mounting of the workpiece, here the fuselage shell 12 may be provided.

It can be used advantageously on per se known traversing or Verschwenkkonstruktionen how z. As described in the cited documents to the prior art. Ultimately, all that matters is that the two tool systems 20-1 and 20-2 can be positioned in a manner adapted to the respective application with respect to the relevant workpiece in order to function as a "riveting tool".

The actual machining of the workpiece formed from the hull shell 12 and stringer (s) 14 takes place by means of the tool heads 22-1 and 22-2 of the two tool systems 20-1 and 20-2 facing the workpiece.

The tool heads 22-1 and 22-2 can each z. B. an array of adjacent individual tools or z. B. also have a turret arrangement of such individual tools.

The tool device 20 serves to form counterbores on the workpiece 12 and to set countersunk rivets in the countersunk bores.

The riveting system 10 further comprises a programmable control device ST for generating the required tool control data "ws", which are transmitted to the tool device 20 for controlling the tool systems 20-1 and 20-2.

In the illustrated example, the tool head 22-1 of the tool system 20-1 comprises in particular (at least) a so-called "countersink", or alternatively a drill and a countersink, in order to accomplish the formation of the countersunk bores required on the workpiece. Furthermore, the tool head 22-1 comprises a tool for setting countersunk rivets (in each of the previously formed countersunk holes), ie for "rivet feeding" and "holding back".

The tool head 22-2 which is used on the other side of the workpiece 12 when setting a rivet comprises, in particular, a so-called "striker" for crimping the "closing head" of the rivet located on the side of the rivet (here: countersunk head) relevant rivet.

On the side of the first tool system 20-1, for example as one of the components of the tool head 22-1, there is further provided an optical detection device for optically detecting the workpiece surface and for providing corresponding detection data "ed".

In the example described, by means of this optical detection device, for example a video camera, those positions on the surface of the workpiece 12 are initially determined at which the said rivet rivets, ie, for. B. in the Fig. 1 illustrated stitch rivets 16, 18 are arranged. This determination is made by a suitable program-controlled evaluation of the detection data (here: image data) of the optical detection device. The evaluation takes place on the basis of a suitable evaluation algorithm, which runs in the control device ST, to which the detection data "ed" are fed for this purpose.

A running in the controller ST for the purpose of generating the tool control data "ws" control software uses the previously determined positions of the staple rivets in the subsequent implementation of the riveting advantageously as "reference points" for automatically set countersunk rivets.

In the course of the automatic riveting process, the staple rivets are removed using the tool means 20 and replaced by countersunk rivets in the same place. This is done in the illustrated example by drilling the stitching rivet, then drilling a final suitable counterbore, and finally setting, i. Feeding and crimping a suitable countersunk rivet.

Fig. 2 illustrates a situation in which by means of the riveting system 10 of the staple rivet 16 has already been replaced by a countersunk rivet 30. In the further course of the riveting process, in particular the staple rivet 18 is removed and replaced by a countersunk rivet. In addition, a plurality of further countersunk rivets are set in an automatic manner, for example on connecting lines between the positions of the originally set rivet rivets (Such positions on the connecting lines, as well as the connecting lines themselves, can advantageously be calculated from the rivet positions serving as reference points and previously stored).

In the Fig. 2 contained enlarged detail illustrates the principal problem that, depending on the accuracy of the function of the tool device 20, an undesirable "set head projection" H can be present on the already set rivet 30.

Although, by taking into account the geometry or construction of the workpiece to be riveted by the correspondingly running control program (to generate the control data "ws") ideally no unwanted setting head supernatant result, so it should be considered that due to certain tolerances of this ideal case in practice difficult can be reached.

The embodiment according to the invention aims at achieving a number of such rivets (compare rivet 30 in FIG Fig. 2 ) to allow a high and consistent quality of the riveting along the surface of the workpiece 12, wherein in the illustrated example, in particular the setting head projection H should be kept within a small predetermined tolerance range reliably to later repairs due to a too large or too small (negative) setting head supernatant to avoid.

For this purpose, the control device ST or the control software running therein is designed to carry out an evaluation of the detection data "ed" in order to obtain geometry data which contains at least one geometry parameter (cf. Fig. 3 ) represent an already formed counterbore. Then, the obtained geometry data are evaluated by the control device ST. Depending on the result of the evaluation correction data are then generated as needed and used for a correction of the tool control data "ws" for a subsequently formed counterbored. This peculiarity of the riveting system 10 or of the method thus carried out are described below with reference to FIG Fig. 3 to 5 again explained in more detail.

D1:

Bohrungsdurchmesser ("Innendurchmesser" der Senkbohrung 40)

D2:

Senkungsdurchmesser ("Außendurchmesser" der Senkbohrung 40)

α:

Senkungswinkel der Senkbohrung 40

T:

Senktiefe der Senkbohrung 40.

Fig. 3 illustrates the geometry of a counterbore 40 on the workpiece 12. The following geometry parameters can be seen:

D1:

Bore diameter ("inner diameter" of the counterbore 40)

D2:

Reduction diameter ("outer diameter" of the counterbore 40)

α:

Countersink angle of the counterbore 40

T:

Lowering depth of counterbore 40.

It is easy to understand that the following relationship applies to the geometry parameters defined in this way: $$\left(\mathrm{D}\mathrm{2}-\mathrm{D}\mathrm{1}\right)/\mathrm{2}=\mathrm{T}*\tan \left(\mathrm{\alpha }\right)$$

In particular, when the counterbore 40 is formed by means of a countersink, the values of D1 and α are relatively accurately predetermined. Given the knownness of D1 and α, the sinking depth T can thus be calculated in a simple manner according to a determination of D2 (and / or, for example, the difference D2-D1) based on the optical detection data "ed".

In the example described, the aim is to achieve a high and lasting accuracy (with regard to the plurality of rivets to be performed) when forming counterbores 40, in particular also for the values of T and D2.

In the illustrated embodiment, the camera (optical detecting means of the riveting tool 10) supplies image data from the surface of the workpiece 12.

Fig. 4 shows by way of example such an "image" of the workpiece surface in the region of an already formed counterbore 40.

The corresponding image data "ed" are evaluated by means of an evaluation algorithm running in the control device ST for determining the value of one or more geometry parameters. In the following it is assumed that z. B. the value of the reduction diameter D2 is determined by this evaluation and received in the geometry data obtained in this way.

The bore diameter D1 and the countersink angle α are known to the control device ST, since the control of the tool device 20 also includes the selection of a specific drill bit (or alternatively a specific combination of drill bit and countersink) if the tool device 20 has several different such tools ,

In conjunction with the known values for the bore diameter D1 and the reduction angle α, the lowering depth T of the counterbore 40 is then calculated by the control device ST and compared with a predetermined value of a setpoint lowering depth T0 (this setpoint value T0 can be stored in the control device). This comparison is used to obtain correction data, which z. B. are representative of an actual value / setpoint difference T-T0. The result of this evaluation of the geometry data, here z. As the difference T-T0, is then used to make a correction of the tool control data "ws" for a subsequently formed counterbored.

So if z. B. the previously "measured" counterbore 40 has an actual sinking depth T, which is greater than the predetermined for this counterbore 40 target sinking depth T0, so can by correcting or updating the tool control data "ws" already for the next trained counterbore improved quality in terms of sink depth can be achieved.

Thus, a "closed loop" can be realized, so that - preferably during the processing of one and the same workpiece 12 - a continuous monitoring and, if necessary, correction of the tool control data "ws" takes place.

Fig. 5 shows again a flow chart of the essential steps of the riveting described.

The process starts with a step S1 in which a counterbore is formed at a specific location of the workpiece 12 in accordance with the control program.

In a step S2, by means of the optical detection device, for. B. camera, detection data (eg image data) provided and evaluated to geometry data containing the value of at least one geometry parameter, here z. B. the sinking depth T, to obtain.

In a step S3, this sinking depth T is compared with the corresponding setpoint T0 and it is decided whether a correction of the tool control data "ws" is required. If this is not the case, the tool control data "ws" are not changed in this regard, and after approaching the position of a counterbore to be next executed according to the program, the processing proceeds again to step S1. Otherwise, if a correction is indicated, the processing proceeds to a step S4 in which the or the relevant control parameters are suitably adapted in the tool control data "ws". In the present example, therefore, a correction of that control parameter takes place, which is decisive for the sinking depth T to be formed. Only then does the processing return to step S1, so that the correction carried out is advantageously taken into account for the formation of the further countersunk holes still to be formed in the overall process.

Although the invention has been described with reference to a specific embodiment, details may be modified in many ways. In particular, the invention can be used both for one-piece and multi-part rivets (for example, so-called pass rivets). Although the counterbores in the example described each consist of a (single) cylindrical bore portion and a (single) conical counterbore, so come in the context of the invention, more complicated designs of counterbores into consideration.

Claims (6)

1. Riveting device for applying a plurality of rivets along the surface of a workpiece (12), comprising:

   - a tool device (20) which can be controlled by means of tool control data (ws) for providing counterbores (40) in the workpiece (12) and placing countersunk rivets (30) in the counterbores (40) so provided,

   - a programmable control device (ST) for generating the tool control data (ws) for the tool device (20),

   - an optical recording device (22-1) for the optical recording of the workpiece surface and to provide recording data (ed),

   characterised in that the control device (ST) is provided for
   making an analysis of the recording data (ed) to obtain geometric data to represent at least a countersink diameter (D2) of a counterbore (40) already made, and depending on the outcome of an analysis of the geometric data obtained while also taking account of a hole diameter (D1) of the counterbore (40) and a countersink angle (α) of the counterbore (40), correcting the tool control data (ws) for a countersink depth (T) for a counterbore (40) that is to be made subsequently.
2. Riveting device according to claim 1, wherein the optical recording device (22-1) is a camera for providing image data.
3. Riveting device according to any one of the preceding claims, wherein for analysing the geometric data at least an actual geometric parameter (T) contained therein or subsequently calculated during this analysis is compared to a corresponding prescribed target geometric parameter (T0) and the correction of the tool control data (ws) is effected based on a comparison of the actual geometric parameter (T) with the target geometric parameter (T0).
4. Riveting device according to any one of the preceding claims, with the correcting of the tool control data (ws) being provided by means of a closed control loop (S1 to S4) .
5. Method of applying a plurality of rivets along the surface of a workpiece (12), comprising the steps:

   - making counterbores (40) in the workpiece (12) and placing countersunk rivets (30) in the counterbores (40) by means of a tool device (20) controlled by means of tool control data (ws),

   - program-controlled generation of tool control data (ws) for the tool device (20) by means of a programmable control device (ST),

   - optical recording of workpiece surface for providing recording data (ed),

   characterised in that the method further comprises the following steps to be implemented by means of the control device (ST):

   - analysis of the recording data (ed) to obtain geometric data representing at least a countersink diameter (D2) of a counterbore (40) already made,

   - analysis of the geometric data obtained, and

   - correction of the tool control data (ws) for a countersink depth (T) for a counterbore (40) to be provided subsequently depending on the outcome of the analysis of the geometric data while also taking into account a hole diameter (D1) of the counterbore (40) and a countersink angle (α) of the counterbore (40).
6. Use of a device (10) according to any one of claims 1 to 4 and/or of a method according to claim 5 for making a plurality of riveted connections (30) between a flat component (12) and an elongated reinforcement element (14) mounted on a flat face of the component (12), particularly in the context of the production of a reinforced hull or fuselage shell of a vehicle, in particular an aircraft.

Images